Sea-Bird Scientific SBE 25plus, User Manual, Page: 9 / 66

1 Common 4 Serial 2 data RX
2 Serial 1 data RX 5 Serial 2 data TX
3 Serial 1 data TX 6 Auxiliary power out
J7 data I/O, pump, external power
Contact Function Contact Function MCBH6MP
1 Common 4 Pump power common
2 RS232 data RX 5 Pump power
3 RS232 data TX 6 Auxiliary power in,
14–20 VDC
Figure 1 Y cable
Figure 2 Data I/O cable
Figure 3 SBE 4 to CTD cable
Notes:
• The Y cable from J7 connects to the pump and a data I/O power cable, so the system
can connect to a PC for setup and to transmit data, and to externally power the
25plus.
• Auxiliary sensors that draw more than 1 amp, even momentarily, must be
connected to J3 or J6. Refer to
High current-draw sensor integration
on page 57 for details.
Specifications
7